code: def asdict(self):
      return {
          "name": self.name,
          "description": self.description,
          "column": self.column,
          "inputType": self.input_type,
          "default": self.default,
          "active": self.active,
      }
  
file_path: dtale/dtale/predefined_filters.py
imports: import inspect
  from six import PY3
label_desc: Use image node_id 2 for calling the PredefinedFilter obj's underlying member method code with example usage: obj.asdict() and returns: dict